Where are the seeds of Alnus cremastogyne? How to raise seedlings?

Alnus cremastogyne is a valuable tree species, its tender stems and leaves or bark can be used as medicine, and has a good effect on the treatment of hematemesis, diarrhea, dysentery and so on. How to raise seedlings? Let's learn about it.

Where are the seeds of Alnus cremastogyne?

There are many ways to buy alder seeds in Sichuan and Yunnan, such as local flower and bird markets, seed shops, agricultural capital stores, etc., and you can also buy them online, but pay attention to choosing businesses with good reputation and high reputation for online purchase. this is helpful to ensure the quality of Sichuan-Yunnan alder seeds and improve the seedling emergence rate.

How to raise seedlings of Alnus cremastogyne?

1. Sowing seeds

Because the seeds of Alnus cremastogyne are small and the germination rate is low, the seeds should be sowed in the morning and evening in sunny and windless weather. After sowing, the soil should not be covered, and the seeds should be properly suppressed so that the seeds can be closely combined with the soil, covered with pine needles, watered and sown in spring. Spring sowing should be carried out from mid-February to mid-March. Soak the seeds in warm water for 1-2 days before sowing, and sow 2-2.5 kg / mu.

2. Seedling stage management

About 30 days after sowing, the seedlings were unearthed, when the seedlings had 3-5 true leaves or uniform seedlings. In the process of sowing and raising seedlings, it often occurs that the seedlings are too dense or the emergence of seedlings is irregular and the density is uneven, so inter-seedlings are needed. Attention should be paid to the time, object and intensity of interseedling, early rather than late. The interseedling is caused by diseases and insect pests, mechanical damage, poor growth and abnormal seedlings, the intensity of interseedling should not be too large at one time, generally divided into 2-3 times.

3. Land selection and preparation

The afforestation site is selected on the cutting site of artificial commercial forest with an average altitude of 1900-2300 meters, red soil, medium thickness, shady slope and semi-sunny slope. The forestland of the cutting site is cleared by planned burning of the remaining branches, pine needles, weeds, etc., and then the soil is prepared after manual removal of the residue. The specification of soil preparation is 40 cm × 40 cm × 30 cm, and the core soil and topsoil are stacked separately during soil preparation. Weeds, pine needles, withered branches, tree roots and stones are removed when filling, and the filling is required to be compact and full.

4. Planting technology

When planting, the seedling should be upright, the soil should be solid, and the pond should be flat. The stem of the seedling should be upright, the root system should be stretched, and the depth should be appropriate. After half of the soil is filled, the seedling should be stepped on, then the soil should be filled, and finally covered with empty soil. When the container seedlings were planted, all the containers were torn off to ensure that the seedlings survived the winter smoothly in the same year, and the plots whose preservation rate could not meet the requirements were replanted once in the second year after afforestation, so that the young forests were closed in time.

5. Disease control

Strengthen tending, timely thinning to facilitate ventilation and light, control aphids, shell insects and wood lice on alder, and spray 12-20 times turpentine mixture or 0.5-1 degree stone sulfur mixture to achieve the purpose of pest control and disease prevention. The leaf beetle was sprayed with 1000-2000 times of 90% trichlorfon to kill larvae and adults before overwintering. The use of adults has a false death, shaking branches to catch and kill. To protect natural enemies, the main natural enemies of Euphorbia angustifolia leaf beetles are big flies, ladybugs, parasitic wasps and so on.

Sichuan-Yunnan alder has high value, tender stems and leaves or bark can be used as medicine, mainly for hematemesis, bleeding, diarrhea, dysentery, sores and sores, which are now planted in many areas. if you want to plant, you can refer to the above methods.

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